Patents by Inventor Karel Prazak

Karel Prazak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4071052
    Abstract: An improved arrangement of leno discs on axially opposite sides of the main fabric beat-up discs of a rotary reed is described. Three leno discs are provided in each set, with the channel between the innermost and intermediate ones of the discs in each leno set being established by an adjustable spacer to form the required warp-free zone between spaced bundles of the leno warp threads guided by the leno discs. The innermost disc of each set is identical in construction with the outermost disc, with the intermediate one of the discs differing from the other two only by exhibiting a peripheral warp-confining chamfer which is complementary to that of the other two discs. The chamfer of the intermediate disc is disposed on the reed shaft in axially opposed relation to the chamfer of the innermost disc.
    Type: Grant
    Filed: September 24, 1976
    Date of Patent: January 31, 1978
    Assignee: Vyzkumny ustav bavlnarsky
    Inventors: Vitezslav Vasek, Pavel Koblizek, Karel Prazak
  • Patent number: 3952780
    Abstract: Apparatus for stabilizing a fabric in the travelling-wave shedding looms in a zone thereof where the weft is beaten up by beating-up projections of the disc of a rotary reed. The apparatus comprises means forming a stabilization slot, and a deflection rail downstream of said means, the top portion of said deflection rail lying above the level of the weaving plane, the means forming the stabilization slot including an upper delimitation rail having a lower edge and fixed on a continuous crossbar along the weaving plane, and a lower rail, the upper delimitation rail being an elastic stabilizing strip secured at its upper edge to the crossbar.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: April 27, 1976
    Assignee: Vyzkumny ustav bavlsnarsky
    Inventors: Dalibor Sejbal, Vitezslav Vasek, Zbynek Miks, Karel Prazak